Manufacturing Processes IME 330
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This 0 page Class Notes was uploaded by Mr. Lorine Satterfield on Sunday November 1, 2015. The Class Notes belongs to IME 330 at North Dakota State University taught by Valery Marinov in Fall. Since its upload, it has received 25 views. For similar materials see /class/233230/ime-330-north-dakota-state-university in Industrial Engineering at North Dakota State University.
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Date Created: 11/01/15
IME 330 EXAM C STUDY GUIDE USE TO PREPARE FOR THE EXAM ONLY THE STUDY GUIDE IS NOT ALLOWED IN THE CLASSROOM AT THE EXAM TIME Class 19 Powder Metallurgy Name some of the reasons for the commercial importance of powder metallurgy technology What are some of the disadvantages of PM methods What is the principal method used to produce metallic powders and how it works In the screening of powders for sizing what is meant by the term mesh count What is meant by the term shape factor for a metallic particle Define packing factor bulk density and true density for metallic powders How can we increase density by mixing different powders What are the three basic steps in the conventional powder metallurgy process What is the technical difference between mixing and blending in powder metallurgy What are some of the ingredients usually added to the metallic powders during blending and or mix ing What is meant by the term green compact How is isostatic pressing distinguished from conventional pressing and sintering in PM How material density changes with the process parameters in compaction and sintering Class 20 Principles of bulk deformation What are the differences between bulk deformation operations and sheet metal operations What does the ow curve express How are the instantaneous and average ow stresses calculated How does increasing temperature affect the parameters in the ow curve equation How are the hot warm and cold working regions defined relative to the melting point of the given metal Indicate the advantages and disadvantages of cold and hot working Describe the effect of strain rate in metal forming Why is friction generally undesirable in metal forming operations Class 21 Bulk deformation operations Name the four basic bulk deformation operations What is rolling in the context of the bulk deformation operations In rolling of steel what are the differences between a bloom a slab and a billet What is draft in a rolling operation What is forging Describe the three basic types of forging their advantages and disadvantages Why is ash desirable in impression die forging What is extrusion Distinguish between direct and indirect extrusion Define extrusion ratio How is the ram force in extrusion calculated What is wire drawing and bar drawing and how do they differ What is draft in a wire and bar drawing operation Class 22amp23 Sheet metalworking Identify the three basic types of sheet metalworking operations Define the three sheet metal cutting operations How is clearance in blanking and punching operations calculated and applied How is the cutting force in the sheet metal cutting operations calculated Define V bending and edge bending in the context of sheet metalworking Explain the stress and strain conditions in bending Explain the concept of the neutral plane in bending How is the minimum bend radius de ned For what is the bend allowance intended to compensate and how is it calculated What is springback in sheet metal bending How is the bending force calculated Define drawing in the context of sheet metalworking What are some of the simple measures used to assess the feasibility of a deep drawing operation What are some of the possible defects in drawn sheet metal parts How is the blank size in deep drawing determined Define the nontraditional metal forming operations and their applications Explain the principles and applications of the highenergyrate forming operations Class 24 Principles of metal casting Identify some of the important advantages of casting processes What are some of the limitations and disadvantages of casting What is meant by the term superheat and why is it needed What are some of the factors that affect the uidity of a molten metal during pouring How to eva luate the uidity of molten metal What are the factors that determine the success of the pouring step in metal casting How to calculate the proper mold lling time Describe the solidi cation process How does solidi cation of alloys differ from solidi cation of pure metals What is the relationship known as Chvorinov39s Rule in casting What are the effects of shrinkage in a metal casting after pouring What is meant by the term shrinkage allowance and how is it applied What methods are used to minimize the problems caused by shrinkage How to design a riser What is directional solidi cation and how is it achieved What is the difference between an open mold and a closed mold What are the two basic mold types that distinguish casting processes Class 25 Sand casting What are the basic steps in the sand casting operation What is the structure of a sand casting mold How is the molten material delivered to the mold cavity What properties determine the quality of a sand mold How is the mold cavity in sand casting formed What is the typical composition of the foundry sand How to select foundry sands for the desired mold and casting properties What types of patterns are used in sand casting What is the purpose of a core in sand casting What is a chaplet What are some of the general defects encountered in sand casting Class 26 Other metal casting operations Describe the steps in the shell molding and investment casting operations What are the applications important advantages and disadvantages of shell and investment casting over sand casting Define a permanent mold casting operation What are the two main die casting operations Explain their principles What are the most common metals used in die casting Which die casting machines usually have a higher production rate coldchamber or hot chamber and why What is centrifugal casting What are the applications of this operation
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